Ubuntu Networking :: How To Setup The X11vnc

Mar 5, 2011

I am a linux novice with root access to an Ubunutn 10 VM which i connect to via putty. I want to connect to it via a GUI from windows xp so I have tried installing x11vnc on the machine and used realvnc from the xp client I have tried to install x11vnc on the machine as follows

sudo apt-get install x11vnc vnc-java"
x11vnc -storepasswd
iptables -A INPUT -p tcp -d 0/0 -s 0/0 --dport 5900 -j ACCEPT
iptables -A INPUT -p tcp -d 0/0 -s 0/0 --dport 5900 -j ACCEPT


This seems to load ok but removes the shell prompt. I presume the server has started and is listening on the ports so i used another putty window to reconnect to my machine and ran sockstat -l and xllvnc is listening on the 2 ports. I then downloaded realvnc windows client and entered the hostname to connect If i entered just the hostname or hostname:5900 i get a timeout error but if i enter hostname:5800 i get 'connection refused' error

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Fedora Installation :: X11vnc : Tail: Cannot Watch /tmp/x11vnc.tray.*

Jun 18, 2011

By invoking x11vnc with the -gui tray option the TCL/TK GUI attempts to embed itself onto the system tray, but I encounter the error message "tail: cannot watch /tmp/x11vnc.tray.*", after the first settings dialog approved [clicked OK]. I believe that a package is still missing to be installed and this is not really a software bug. I use the XFCE version shipped along F15, and the GUI can be started but not as a docked-applet.

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OpenSUSE Network :: Setup X11VNC To Start At Boot?

Jun 8, 2011

Is there any guide for openSUSE 11.3 or 11.4 to make x11vnc to start everytime the pc is rebooted, I have search the forum with no results

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Ubuntu Networking :: How To Restart X11vnc

Sep 13, 2010

How can I restart x11vnc service?

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Ubuntu Networking :: 10.10 Reverse X11vnc Color Depth Changes?

Nov 15, 2010

I have looked around and haven't had a lot of luck finding any information on this. I could be blind...but I'm not sure, haha.

I do a lot of remote support for my clients (I do PC repairs and training). I have recently starting suggesting to some of my basic users that they give Ubuntu a try. So far it has been very well received and they are loving it. The problem I am running into is that some of them use laptops in multiple places, and some use routers that are not easily configured. In each case it makes port forwarding a large pain in the behind to allow for remote access.

I have started using the X11vnc reverse connection and it has been working well, except for the fact that it is using high quality color depth (24bit I think?). I know when starting the connection from my end I can set the color depth, but is there any way to set the depth of a reverse connection?

Also, I understand that using just vnc over the Internet is not secure. I need to look into a decent guide to set up SSH tunneling for this. I don't suppose anyone knows of a good guide for 10.04 and 10.10?

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Ubuntu Networking :: X11vnc - Permission Denied (publickey - Password)

Sep 22, 2010

I want to access my desktop from my laptop over the internet, after a while I found this [URL] so I followed the instructions "Access your PC over the internet" and "Logging in from another Ubuntu PC". Everything goes well until I try to run the shell script and get this: laptopuser@123.456.7.890's password:

I tried my luck with the passphrase associated with the rsa key, with the password of the laptopuser@laptop and with the password of the desktopuser@desktop but I keep getting Permission Denied (publickey, password).

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Ubuntu Networking :: X11vnc Not Passing Upper Case Characters?

Apr 1, 2011

Using 10.04 and x11vnc I'm finding that upper case characters are being sent as lower case. I've tried multiple keyboard configurations with no success

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Ubuntu Installation :: Where Is The X11vnc Located In 11.04

May 9, 2011

I am working with Ubuntu for the first time since school and it was an intro class. I am trying to setup a file server for part of a school project. I installed x11vnc and am trying to set the password. However everywhere I look says the file would be located at ~/.vnc/passwd. However when I ls from the home directory .vnc does not exist. When I type out vncpasswd ~/.vnc/passwd I get returned a message The program 'vncpasswd' can be found in the following packages:

* tightvncserver
* vnc4server

how I can get this setup? Am I using old information that is no longer accurate or am i messing this up somewhere?

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Ubuntu :: Connecting Windows To Over X11vnc With Ssh?

Jul 24, 2011

Im trying to get vnc working over ssh between my windows pc and ubuntu server 11.04 natty over the internet. I have setup everything and got it all running automatically at boot on ubuntu. From within the local network i can use ssvnc and connect from a 2003 server to the ubuntu machine fine. Remotely I can connect and verify password over ssh but after that it tries to start tightvnc and fails. The issues seem to be on the windows side establishing the local connection to the tunnel or something I'm not a guru and I apologize if this is a windows issue but i think its likely that its a networking problem i need to forward or open a port somewhere but i cant find any easy to understand instructions so far in getting this running

This is the output in the putty terminal after running ssvnc slightly modified ive taken out my real username and server address I use user@server:0 as the arguments for ssvnc

Looking up host "server"
Connecting to server-ip port 22
Server version: SSH-2.0-OpenSSH_5.8p1 Debian-1ubuntu3
We claim version: SSH-2.0-PuTTY_Release_0.60
Using SSH protocol version 2


Does anyone have any ideas why the connection fails at the point of using the tunnel? is it a problem on the ubuntu or windows side?

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Ubuntu :: X11vnc Keeps Repainting After Lucid Upgrade

May 6, 2010

I upgraded to Lucid yesterday. All of them solved, except this one: when I connect to my kubuntu PC from a Windows PC and launch x11vnc on the remote and TightVNC on the local, it keeps repainting the window making it unusable. Nothing gets printed to the log when the repaintings occur. Using -noxdamage or -nowf doesn't change a thing. -ncache doesn't work (I get an "ERROR: No active KDE sessions!").

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Ubuntu :: Multi Session Login With X11vnc?

May 31, 2010

I'm creating a new thread based on this post by batagy:



So I have running x11vnc as service without any problem (running on Solaris 10 and SLES10 too). I'm using the x11vnc's inbuilt "user chooser" screen (that little black screen), these command line options:

x11vnc -inetd -unixpw -users unixpw= -display WAIT:cmd=FINDCREATEDISPLAY-Xvnc.xdmcp -env X11VNC_CREATE_GEOM=1248x900 (plus a couple of other options that are not interesting here)

My question is related to the wanted VNC screen size. By default, I set the defauls screen size to 1248x900, as can be seen above.

Currently , when a user want to personalize his/her screen size to be started, he can do it this way: when the small black authentication window is appearing first, after his username, he's entering a colon, then specify the wanted resolution in this format: geom=1600x1200.

My question: is it possible somehow to set automatically the preferred screen size, without entering this ":geom=1600x1200" string in the authentication window? I mean to set it per user, without modifying the service options. I mean, for example setting the X11VNC_CREATE_GEOM or FD_GEOM variables in the user's home ".profile" for example?

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Ubuntu :: Configuring X11vnc To Run At The Login Screen?

Sep 5, 2010

I'm trying to set up x11vncto run at the login screen. This is so that the computer can be powered up remotely using Wake-On-LAN and then controlled remotely. I'm following this tuorial: [URL]I'm having some trouble whit the section about adding to the GDM config files. The tutorial asks me to add

#to get remote vnc to not die after login


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Slackware :: X11vnc Slackbuild For 13.1?

Aug 24, 2010

it seems that there is no x11vnc slackbuild on sbo for 13.1. just wondering if there is something else people use to share the :0 desktop, or should i start looking into the 13.0 slackbuild

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OpenSUSE Network :: 11.2 Xen Bridged Networking - Setup Multiple DomU Through The Default Bridge Setup

Feb 4, 2010

Im trying to setup multiple domU through the default bridge setup. I am able to access only one of them through the network at a time. If you ping one of the domU it works perfectly but you cannot ping any of the others until you stop pinging the one and even then it takes a bit before you can. Ive looked around for a while and seen similar problems but nothing ever seems quite the same. Im probably missing something really stupid. Or is this the way the bridge is supposed to behave? Do i need to use a routed virtual network?


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Ubuntu :: Using X11vnc And Ssvnc With ESD For Remote Desktop With Audio

Aug 11, 2010

At the moment I'm running Putty on a windows box at work to SSH in and tunnel port 5900, then I execute

x11vnc -xkb -ncache 10 -safer -localhost -nopw -once -display :0
from the shell.

I run ssvnc and tell it to connect to localhost, and we're good for remote desktop.

The next step is to push my luck and see if I can get streaming audio as well.

ssvnc is supposed to automate many of the required processes, making the use of a standalone ssh client like Putty redundant - it bundles a similar program, passing commands through ssh from its GUI

Under options/advanced it has a facility to 'Enable ESD/ARTSD' audio tunnelling and it bundles a windows-executable (using cygwin library) version of ESD, so it just needs some configuration.

When you click that option there's a documentation pane that says you can put


esddsp -s localhost:16001 gnome-session

in your ~/.xsession startup file but since I use my Lucid box for local sound as well I'm not sure that's ideal as I want to use JACK, etc. and it looks like this command would route all audio to network, all the time.

ssvnc suggests using "x11vnc -create" mode to start it up in a virtual X session through Xvfb but it doesn't really go into any more detail as to how you do this.

I've installed Xvfb through synaptic, and that's as far as I've gotten.

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Ubuntu :: No Input Registered When Using X11vnc Server And Chicken Of The VNC

Feb 10, 2011

I'm using Ubuntu 10.04, and I'm trying to VNC into my Ubuntu box from my MBP. I can connect just fine, however, I am unable to register any mouse clicks or keyboard input on the resulting desktop. I'm launching it as follows: x11vnc -nomodtweak -scale 9/10 I can log in using my Windows box and UltraVNC and use input with no problem.

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Ubuntu Servers :: Using X11vnc On Virtual Private Server To Connect

Sep 26, 2010

I have a virtual private server that I am trying to connect to using x11vnc. I ran this through ssh to setup gnome

sudo apt-get install gnome-core
sudo apt-get install gdm
sudo /etc/init.d/gdm start
sudo dpkg-reconfigure xserver-xorg

I later ran sudo apt-get install ubuntu-desktop to see if that would help.

#cat /etc/issue
Ubuntu 10.04.1 LTS
#sudo startx
Fatal server error:
xf860OpenConsole: Cannot open /dev/tty0 (No such file or directory)
I assume this is because it probably doesn't have a video card.

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Ubuntu :: X11vnc Server Logs Out To Login Screen After 1 Minute?

Nov 3, 2010

I have x11vnc server set up on my desktop PC. I can boot the computer and connect at the login screen if I want to. I can login to my computer as usual. But after about 1 minute of logging in, the computer logs off as if pressing Ctrl+Alt+Backspace and returns me to the login screen. This cycle repeats when I login and I have to kill the x11vnc process or remove the command from /etc/gdm/Init/Default.Have tried so many things now but the end result is the same. I have Ubuntu 10.10 fully updated and x11vnc 9.10-1 from the default repos. I am using the following command in the /etc/gdm/Init/Default file:


/usr/bin/x11vnc -rfbauth ~/.vnc/passwd -rfbport 5901 -display :0 -forever -bg

I don't think it matters now whether I add KillInitClients=false into /etc/gdm/gdm.conf-custom or /etc/gdm/gdm.conf because of the x11vnc version I have. The manual says its not really needed. But I have tried this too with no better luck.The computer will still log me out after about a minute of logging in. It can be between 1 min to 1.5 mins.Running out of ideas and have tried the -noxfixes and -reopen commands.

Why does x11vnc crash out (or it may be gdm or x server?) after about a minute of logging in? If I am currently viewing my desktop through VNC viewer on another computer, it will still crash out after 1 min of log in, and lose the connection. I can reconnect through VNC again but I have to log back in to the remote computer and it will just log out after another minute.At last, in 2 days I have finally solved it. As simple as creating my own version. The x11vnc 9.10-1 version my default Ubuntu 10.10 repos is buggy. Here's my fix (I used this site):

1. Downloaded latest x11vnc dev build from above site (x11vnc-0.9.13-dev.tar.gz at time of posting)
2. Extract it
3. Open Terminal > sudo -s > enter admin password
4. cd LocationOfExtracted folder


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Debian :: X11vnc Fails After Jessie Upgrade

Jan 18, 2016

Using x11vnc server on Debian host, and TightVNC viewer client on Windows 7. All was working fine until a server host upgrade, from Wheezy to Jessie. Now, when I try to connect, TightVNC retrieves the certificate as normal, compares and accepts it, and starts stunnel. The next step would normally be to prompt for the VNC password.

Instead it gives an error:

ReadExact: Socket error while reading.

I'm guessing that some thing is missing or misconfigured after the Jessie upgrade, which broke many other things too, as Debian upgrades always seem to do. I have removed and reinstalled the x11vnc package, no effect.

The errors in the log file don't mean a lot to me.

The server is started with this command:

Code: Select allx11vnc -ssl -display :0 -usepw >>vnc-log 2>&1 &

If I start it up without the -ssl flag, and connect from the Windows system with a different client (Mobaxterm) it all goes well.

Relevant part (tail) of the server log file:

Code: Select allThe SSL VNC desktop is:  myhost:0

19/01/2016 12:31:10 SSL: accept_openssl(OPENSSL_VNC)
19/01/2016 12:31:10 SSL: spawning helper process to handle:
19/01/2016 12:31:10 SSL: helper for peerport 51942 is pid 11193:
19/01/2016 12:31:10 connect_tcp: trying: 20000

[Code] ....

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Fedora :: X11vnc Running A Service When Gdm Starts?

Aug 21, 2011

I want to run 1 instance of x11vnc at boot after gdm starts, itsa remote vnc server that will work without me first loggin in

Im just not sure where or how to start it when computer boots? i can run it on another tty and connect so its all setup but not sure what the "right" was is.

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OpenSUSE Network :: Cannot Start X11vnc From Remote Via Ssh (11.4 Gnome)

Aug 23, 2011

Opensuse 11.4 and Gnome

I cannot get x11vnc to start via ssh. I keep running in to this MIT magic cookie.

I have tried the -findauth and -auth guess but I am told .Xauthority is not set.

ps wwaux | grep auth which worked for me under KDE does not help.

I am using x11vnc so that I can export the active seesion :0

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CentOS 5 :: X11VNC - Connecting By Client Login In X Screen

Mar 17, 2010

Before we use CentOS 4 and all work fine. We start x11vnc by ssh like root. And after this connect by client login in X screen. In CentOS 5 this way don't work. For connect we must login by local from keyboard, start x11vnc ssh by logined local user, and after this we may work, but can't change users.

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Fedora :: X11vnc Screen Size Don't Update Past 800x600?

Feb 10, 2011

How come on x11vnc, with Fedora 12 PPC/x86/x64, my screen sizes can't be greater than 800 x 600, and they don't update when I change them in Displays. On my Ubuntu installations the x11vnc screen sizes update and can be basically any size selectable in Monitors.

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CentOS 5 Server :: Gnome System Menu Causes Crash For Either X11vnc Or Freenx?

Jul 28, 2009

Sorry if this is in the wrong group but its a bit of an odd one but I think comes under Server Support.. I've set up both x11vnc and freenx in an attempt to eliminate either as a cause for this issue. The problem is that when I log in with either, I can get into the desktop and run things from the menus but when I make the System menu active - the session hangs and you have to killall for the freenx or vnc processes.

I was wondering if anyone might be able to help me investigate this and hopefully fix it as I'm not sure where to look given that both types of remote connection seem to have the same issue.

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Networking :: Feasible / Desirable To Setup A Network Of Virtual Machines To Use As An Environment To Learn Networking?

Nov 18, 2010

I've been learning linux for a while now with half an eye on making a career out of it in future. One sizeable gap in my knowledge at the moment is networking. Is it feasible/desirable to set up a network of virtual machines to use as an environment to learn networking? My budget is non-existent so I was hoping to be able to get a basic understanding of the principles from installing a few desktops, a virtual gateway etc on VMware workstation on my laptop, and doing a lot of reading online.

Is this feasible, or will I just end up learning about virtual networks instead of real ones? Also how much power would be required, because my 3GB RAM lappy has just gone bang and all I have now is a (new) 1GB RAM lappy.

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Ubuntu Networking :: Setup LDAP On 10.04?

Jul 20, 2010

I am trying to set up LDAP on 10.04 and cannot figure out what my FQDN is. Where do I find it or how do I configure it?

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Ubuntu Networking :: Best Wireless Setup For 10.04

Aug 2, 2010

I recently bought the D-Link DIR-655 and DWA-140 wireless setup just before converting completely to Linux from windows. I'm sure there are issues with the ralink rt2870 chipset. I did get this to work after a few days of trying various things, but I could not get Wireless N to work, it only operates in G mode. This seems to have something to do with needing to use AES for N-mode. My wireless setup will only work with Ubuntu if I have TKIP set. This of course requires my entire network to work at G speeds. Consequently I am returning my D-Link setup tomorrow, and am looking for the community opinion on what Router/adapter setup is truly out-of-the-box compatible with Ubuntu 10.04. This Router will need to be compatible with other windows based computers on the network running the DWA-140 USB adapters. (I have no PCI slots available).

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Ubuntu Networking :: 10.04 - How To Use PPTP After Setup

Oct 15, 2010

Trying to connect to my office as a PPTP client, I have setup my PPTP connection in Ubuntu 10.04, and the connection is active, as I can see from the top bar, and the output of ifconfig:

eth0 Link encap:Ethernet HWaddr 00:18:8b:b7:a3:ef
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo Link encap:Local Loopback
inet addr: Mask:
inet6 addr: ::1/128 Scope:Host
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:580 (580.0 B) TX bytes:580 (580.0 B)

ppp0 Link encap:Point-to-Point Protocol
inet addr: P-t-P: Mask:
RX packets:9 errors:0 dropped:0 overruns:0 frame:0
TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:108 (108.0 B) TX bytes:96 (96.0 B)

wlan0 Link encap: Ethernet HWaddr 00:19:d2:7a:96:e5
inet addr: Bcast: Mask:
inet6 addr: fe80::219:d2ff:fe7a:96e5/64 Scope:Link
RX packets:8525 errors:0 dropped:0 overruns:0 frame:0
TX packets:8496 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5799296 (5.7 MB) TX bytes:1408867 (1.4 MB)

Now I want to access the folder named ABC on the remote PC with IP address of, with username USER1 and password PASS1.

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Ubuntu Networking :: How To Setup Lan And Wifi

Jan 29, 2011

setting up the lan and wifi settings

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Ubuntu Networking :: How To Setup The LTSP

Feb 11, 2011

I just bought a old xeon server and am installing ubuntu 10.10 with ltsp, i have also bought 3 thin clients to add to it, what kind of hub or switch do i need to use with it? also is it straight through or crossover cat5 cables that i need? is there any good sites that i should look at for setting this all up, my end goal is to have educational stuff on them for my kids with internet enabled only at certain times, and have movies available from the server for them to watch.

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